package com.hengli.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.hengli.constant.MessageConstant;
import com.hengli.constant.PasswordConstant;
import com.hengli.constant.StatusConstant;
import com.hengli.context.BaseContext;
import com.hengli.dto.EmployeeDTO;
import com.hengli.dto.EmployeeLoginDTO;
import com.hengli.dto.EmployeePageQueryDTO;
import com.hengli.dto.PasswordEditDTO;
import com.hengli.entity.Employee;
import com.hengli.exception.AccountLockedException;
import com.hengli.exception.AccountNotFoundException;
import com.hengli.exception.PasswordErrorException;
import com.hengli.mapper.EmployeeMapper;
import com.hengli.result.PageResult;
import com.hengli.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存oa在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //对象属性拷贝BeanUtils,因为类都差不多，不用一个一个set
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置账号状态，默认正常状态1，锁定状态0
        employee.setStatus(StatusConstant.ENABLE);

        //设置默认密码
        employee.setPassword(PasswordConstant.DEFAULT_PASSWORD);

        //放在切面中了
//        //设置当前记录的创建时间和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //设置当前记录人ID和修改人ID
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);

    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询,pagehelper
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        long  total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {

//        Employee employee = new Employee();
//        employee.setId(id);
//        employee.setStatus(status);
        Employee employee=Employee.builder()
                .status(status)
                .id(id)
                .build();
        //这样写通用性更强
        employeeMapper.update(employee);
    }

    /**
     * 删除员工
     * @param id
     */
    @Override
    public void delete(Long id) {
        employeeMapper.deleteById(id);
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("******");
        return employee;
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);
        employeeMapper.update(employee);

        //切面
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());

    }
    /**
     * 修改密码
     * @param passwordEditDTO
     */
    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO, HttpServletRequest request) {

        // 获取旧密码
        Employee employee = employeeMapper.getById(BaseContext.getCurrentId());

        //新密码和旧密码不能相同
        if (passwordEditDTO.getNewPassword().equals(passwordEditDTO.getOldPassword())) {
            throw new PasswordErrorException(MessageConstant.PASSWORD_EDIT_FAILED_SAME);
        }

        // 匹配旧密码
        if (!passwordEditDTO.getOldPassword().equals(employee.getPassword())) {
            // 匹配失败，抛出业务异常
            throw new PasswordErrorException(MessageConstant.PASSWORD_EDIT_FAILED);
        }
        employee.setId(BaseContext.getCurrentId());
        employee.setPassword(passwordEditDTO.getNewPassword());

        employeeMapper.update(employee);
    }

}
